| 摘要 |
PURPOSE:To obtain a distinct picture image having scarce color turbidity by incorporating a complex salt of a dye donating substance contg. a diffusion resistant group capable of being coordinated with a divalent transition metal, with a divalent transition metal. CONSTITUTION:A heat developed photosensitive material is formed by incorporating a complex compd. of a dye donating substance having a diffusion resistant group including a group capable of being coordinated with a divalent metal and a divalent transition metal Said dye donating substance to be used is a compd. expressed by the formula. In the formula, L is a diffusion resistant group contg. a group capable of being coordinated with a divalent transition metal; A is a residue of the dye donating substance. Each (m) and (n) is an integer >=1. Further, divalent transition metals capable of forming a complex compd. with the diffusion resistant dye donating substance are Ni, Co, Cu, Pd, Pt, Zn, etc. By this constitution, a heat developed photosensitive material for obtg. a distinct picture image having scarce color turbidity is provided. |
